西江航电枢纽二期工程营运初期对西江水环境的影响调查

将西江航电枢纽二期工程营运初期水文流量和水质监测结果与工程建设前进行对比,结果表明,枢纽营运前后坝址附近水位虽随着大坝的形成有了较大变化,但月平均流量没有发生变化,没有因为水文流量的变化对西江水环境质量产生影响。水质监测结果进一步显示,枢纽投入试营运后,没有造成水质的恶化,调查水域的水质已达到地表水环境质量标准中的Ⅱ类水质标准。综合分析认为,西江航电枢纽二期工程的初期营运没有对西江调查水域水环境质量造成明显的不利影响。

Analysis and evaluation of impacts of Xijiang navigation hydropower junction project on Xijiang water environment

On the basis of monitoring results of water quality and flow rate,monitoring results of flow rate during the navigation hydropower junction engineering operating period and building of the results before were comparative analyzed.The results show that monthly average discharge has not changed,and have no obvious impact on the Xijiang water environment.Monitoring results of water quality show that there' s no deterioration of Xijiang water quality after the operation and the water quality indicators can reach "Surface Water Quality Standards" Class II standards.The results also show that there is no significant adverse effect of the water quality of Xijiang after the operation of the navigation hydropower junction project.